At the age of 24, Haneul Yeon harbours both hatred and envy towards her former schoolmate Bunhong Jin, who had been unkind to her in the past and is now a popular celebrity associated with Haneul's favourite singer, Robin. However, Haneul's desire to switch places with Jin comes true after a mishap causes them to swap bodies. Although thrilled about becoming an idol and having regular encounters with Robin, can Haneul cope with the demanding routine of a performer that requires certain abilities?